Unlocking device for opening a door with a panic lock

Abstract

Unlocking device (10) for opening a door with a panic lock, comprising a base profile (14) attachable to the door leaf and a pressure profile (18) connected to the base profile (14) via a gear mechanism, such that when the pressure profile (18) is actuated, the gear mechanism is activated and the panic lock is actuated via this gear mechanism, wherein the base profile (14) has end caps (16) which are flush with the contour of the base profile (14) on the side facing the pressure profile (18), and wherein the pressure profile (18) has end caps (70) which can be recessed into the base profile (14) together with the pressure profile (18), characterized in that a locking device (38) is provided which blocks the pressure profile (18) and / or the gear mechanism and that the pressure profile (18) can be fully recessed into the base profile (14).

Description

[0001] The invention relates to an unlocking device for unlocking and opening a door with a panic lock according to the preamble of claim 1.

[0002] DE 20 2009 009 609 U1 and US Pat. No. 4,167,280 A disclose an unlocking device mounted on the leaf of a door. Its push-button action is activated and pressed in to open the door. Such unlocking devices are also known, for example, as "touchbars." They are frequently used in escape doors, particularly in public buildings, so that to open the leaf, only the push-button action needs to be pressed in the direction of the door leaf's opening.

[0003] Other unlocking devices are known, in which an opening bar extends across the sash. This bar must be pivoted to open the sash and, in particular, pushed downwards and toward the sash. Escape doors are also known, which are usually locked and only unlocked in an emergency. For this purpose, a holding magnet, for example, is provided in the upper area of ​​the frame and holds the sash in the closed position.

[0004] Such devices are also called electrical locking systems, which lock doors along escape routes and release them upon request in the event of danger, for example, for escaping persons. Such locking systems typically include a control unit, an emergency button, and an electrical locking mechanism based on the closed-circuit current principle, such as a holding magnet. However, closed-circuit door openers for electrical locking are also known.

[0005] These electric locking systems are usually installed in the upper area of ​​the door or frame. This type of installation has some negative characteristics due to its design, particularly with double-leaf escape doors. One disadvantage is that the installer is forced to create additional cutouts or mounting holes for the required electric locking elements in addition to the necessary cutouts for the main lock. This further weakens the door leaf and increases the machining and installation effort. Furthermore, such machining can weaken the door leaf and / or frame to such an extent that fire or smoke protection regulations are no longer met.

[0006] If someone attempts to force open the door without electrically releasing the locking element, the latch of the main lock is retracted when the push rod or touch bar is operated, but the door remains held in the closed position by the electrical locking element located at the top of the door. If the person using the door then exerts excessive pressure on the door element, it will deform and even damage the door leaf, as the door is still locked. With a double-leaf door, pressing the push rod or touch bar on the inactive leaf side can retract the espagnolette bars so far that they leave the floor recess and the upper striking plate and cannot re-enter due to the deformation of the door leaf. Likewise, on the active leaf side, the latch may leave the striking plate and not return to the striking plate of the inactive leaf lock because the active leaf has been deformed too much.In both cases, the door would no longer be fire-safe. Furthermore, there's a risk that such a tightly clamped door would no longer function in the event of a panic attack.

[0007] In addition, doors that are to be retrofitted as escape doors require extensive reworking and modification, which often cannot be done on-site.

[0008] In addition, it has been found that the known unlocking devices protrude too far from the door leaf when activated, thereby unnecessarily restricting the width of the escape route.

[0009] The invention is therefore based on the object of providing an unlocking device that prevents deformation of the door leaf and is also relatively easy to retrofit. Furthermore, the width of the escape route should not be unnecessarily reduced.

[0010] This object is achieved according to the invention in an unlocking device of the type mentioned at the outset by the characterizing features of claim 1.

[0011] The invention has the significant advantage that when the unlocking device is activated, only the base profile protrudes, projecting into the escape route when the door is open, while the pressure profile is recessed into the base profile. According to the invention, the end caps of the pressure profile are recessed into the base profile together with the pressure profile.

[0012] According to the invention, the base profile has end caps that are aligned with the contour of the base profile on the side facing the pressure profile. This ensures that when the pressure profile is pressed in, i.e., recessed into the base profile, the end caps of the base profile do not protrude beyond the base profile in a way that is disruptive and restricts the escape route.

[0013] In a preferred embodiment, the locking device comprises a locking element arranged in the base profile, which is particularly equipped with an electric escape door opener or a holding magnet. This locking element prevents the push-in profile from being pushed in and thus the panic lock from being activated if it is not released. Only after the locking element has been released can the push-in profile and thus the unlocking device be activated.

[0014] In a further development of the invention, the locking device comprises a holder arranged in or on the pressure profile and engaging the locking element. This holder is blocked when the locking element is not released, preventing the pressure profile from being pushed in and thus activating the panic lock. The electric escape door opener or holding magnet blocks relative movement between the base profile and the holder.

[0015] In a preferred embodiment, the holder has at least one pivot arm that engages the electric escape door opener or holding magnet and whose displacement path can be released by the electric escape door opener or holding magnet. This pivot arm is held in place by the locking element if the latter is not released. As soon as the locking element is free, the pivot arm can be moved past the locking element. If the pivot arm, which projects towards the base profile, hits the bottom of the base profile, it pivots out to the side so that the pressure profile can be pressed in further and is not hindered by the holder. The pivoting out is assisted by an expanding cam mounted on the bottom of the base profile.

[0016] To ensure that the swivel arm automatically returns to its non-extended position after pivoting, the swivel arm engages behind a return lug provided on the base profile when pivoted out. This return lug prevents the pressure profile from escaping from the base profile when the swivel arm is pivoted out. The swivel arm is essentially positively guided.

[0017] Further advantages, features, and details of the invention emerge from the dependent claims and the following description, in which a preferred embodiment is described in detail with reference to the drawing. The features illustrated in the drawing and mentioned in the description and claims may be essential to the invention both individually and in any combination.

[0018] The drawing shows: Fig. 1 a perspective view of the unlocking device in the rest position; Fig. 2 a perspective view of the release device with the pressure profile partially pressed in; and Fig. 3 a perspective view of the unlocking device with the pressure profile pressed in further than in the view of the Fig. 2.

[0019] In the drawing, reference numeral 10 denotes an unlocking device, such as that used in single- or double-leaf escape doors. The unlocking device 10 extends horizontally across a door leaf or the leaf of an escape door as a touch bar, virtually across the entire width of the door leaf.

[0020] The unlocking device 10 has a substantially U-shaped base profile 14, wherein the base or bottom of the base profile 14 is attached to the outer surface of the door leaf. The lateral ends of the base profile 14 are overlapped and covered by end caps 16. In the open side of the U-shaped base profile 14, which faces away from the door leaf, there is a pressure profile 18, which is also U-shaped and whose open side faces towards the base profile 14. This pressure profile 18 is also enclosed at its lateral ends by end caps 70. At the bottom of the base profile 14 there is a gear mechanism (not shown), which is activated by actuating the pressure profile 18 in the direction of the door leaf 12 and thus in the direction of the base profile 14, thereby actuating a panic lock of the door leaf.This allows a latch and, if necessary, other locking devices to be retracted or activated in the panic lock.

[0021] The pressure profile 18 also actuates a locking device, designated as a whole by 38. This locking device 38 has a holder 72 attached to the pressure profile 18, on which two pivot arms 74 are pivotably mounted. These pivot arms 74 protrude toward the base profile 14 and are supported by the opening latch 52 of an electric opener 50. This prevents the pressure profile 18 from being pushed into the base profile 14.

[0022] The electric opener 50 is also a component of the locking device 38 and is located on a base 76 mounted on the bottom of the base profile 14. If the electric opener 50 is actuated so that the opening latch 52 releases the pivot arms 74, the pressure profile 18 can be pressed into the base profile 14 and sunk in. The pivot arms 74 pass the opening latch 52 and strike a spreading cam 78 mounted on the bottom of the base profile 14, which causes the two free ends of the pivot arms 74 to pivot apart, resulting in Fig. 2 is shown.

[0023] By further pressing the pressure profile 18 into the base profile 14, the pivot arms 74 are further spread apart, with the free ends each engaging under a return lug 80 which is fastened to the base 76, which in Fig.3. It is readily apparent that by pivoting the pivot arms 74, the pressure profile 18 can be pressed further into the base profile 14. The two pivot arms 74 are pivotally connected to one another at their bearing ends by means of a gearing, so that the pivoting of one pivot arm 74 causes the other pivot arm 74 to pivot.

[0024] It is also clearly visible from the drawing that, together with the pressure profile 18, its end caps 70 are pushed into the base profile 14, so that when the unlocking device 10 is actuated, it becomes lower or flatter overall, whereby the escape route becomes wider when the escape door is open.

[0025] The base 76 with the attached electric opener 50, as well as the expanding cam 78 and the reset lug 80, form a locking element 82 mounted on the bottom of the base profile 14. Directly above it is the holder 72 with the pivot arms 74. These two elements can be used to retrofit conventional unlocking devices.

Claims

[1] Unlocking device (10) for opening a door with a panic lock, with a base profile (14) which can be fastened to the door leaf and a pressure profile (18) which is connected to the base profile (14) via a gear mechanism, so that when the pressure profile (18) is actuated, the gear mechanism is activated and the panic lock is actuated via this, wherein the base profile (14) has end caps (16) which are aligned with the contour of the base profile (14) on the side facing the pressure profile (18), and wherein the pressure profile (18) has end caps (70) which can be countersunk into the base profile (14) together with the pressure profile (18), characterized by that a locking device (38) is provided which blocks the pressure profile (18) and / or the gear mechanism and that the pressure profile (18) can be completely retracted into the base profile (14). [2] Unlocking device according to claim 1, characterized bythat the locking device (38) has a locking element (82) arranged in the base profile (14). [3] Unlocking device according to claim 2, characterized by that the blocking element (82) has an electric escape door opener (50) or a holding magnet. [4] Unlocking device according to claim 2 or 3, characterized by that the locking device (38) has a holder (72) arranged in the pressure profile (18) and engaging the locking element (82). [5] Unlocking device according to claim 4, characterized by that the electric escape door opener (50) or holding magnet blocks a relative movement of the base profile (14) and holder (72). [6] Unlocking device according to claim 4 or 5, characterized by that the holder (72) has at least one pivot arm (74). [7] Unlocking device according to claim 6, characterized by that the swivel arm (74) projects in the direction of the base profile (14). [8] Unlocking device according to claim 6 or 7, characterized by that the swivel arm (74) engages the electric escape door opener (50) or holding magnet and its displacement path can be released by the electric escape door opener (50) or holding magnet. [9] Unlocking device according to one of claims 6 to 8, characterized by that the swivel arm (74) in the swivelled-out position engages behind a return lug (80) provided on the base profile (14).

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